321354354134405 has 4 divisors (see below), whose sum is σ = 385625224961292. Its totient is φ = 257083483307520.

The previous prime is 321354354134377. The next prime is 321354354134461. The reversal of 321354354134405 is 504431453453123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32890523220676 + 288463830913729 = 5735026^2 + 16984223^2 .

It is not a de Polignac number, because 321354354134405 - 2¹⁸ = 321354353872261 is a prime.

It is a super-2 number, since 2×321354354134405² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321354354134405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32135435413436 + ... + 32135435413445.

It is an arithmetic number, because the mean of its divisors is an integer number (96406306240323).

Almost surely, 2^{321354354134405} is an apocalyptic number.

It is an amenable number.

321354354134405 is a deficient number, since it is larger than the sum of its proper divisors (64270870826887).

321354354134405 is an equidigital number, since it uses as much as digits as its factorization.

321354354134405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64270870826886.

The product of its (nonzero) digits is 5184000, while the sum is 47.

The spelling of 321354354134405 in words is "three hundred twenty-one trillion, three hundred fifty-four billion, three hundred fifty-four million, one hundred thirty-four thousand, four hundred five".